26
S1 S2
S3
A1
A2 A3
S4
All programs +1:
If the difference between collector sensors S1 and S2 exceeds the difference diff3, the
colder collector is switched off. This prevents heat from being lost in the colder collector when
temperatures are mixed.
Warning: In this diagram, priority does not refer to the pumps, but rather to the cylinders.
The
priorities for CYL 1, CYL 2 can be set in the parameter menu under PA. In addition, a
solar priority function can be set for this diagram in the menu
PRIOR (see solar priorities for
more details).
Program 256 - Solar power system with 2 collector panels (1 pump, 2 stop valves)
Program 256:
Pump A1 runs when:
Valve A2 is switched on or valve A3 is switched on.
Valve A2 switches on when:
S1 is greater than the threshold min1 and S1 is greater than S3 by the difference diff1
and S3 has not exceeded the threshold max1.
Valve
A3 switches on when:
S2 is greater than the threshold min2 and S2 is greater than S3 by the difference diff2
and S3 has not exceeded the threshold max1.
A1 = (A2 = on) or (A3 =on)
A2 = S1> (S3 + diff1) & S1 > min1 & S3 < max1
A3 = S2> (S3 + diff2) & S2 > min2 & S3 < max1
All programs +1: If the difference between collector sensors S1 and S2 exceeds the
difference
diff3, the colder collector is switched off. This prevents heat from being lost in the
colder collector when temperatures are mixed.
All programs +2:
In addition: if S4 exceeds the threshold max2 the outputs A1, A2 and A3 are switched off.
S1 S2
min1 min2
S3
max1
diff2
A1, A3
diff1
A1, A2
Required settings:
max1 … limit CYL S3 A1, A2, A3
max2 … see all programs +2
min1 … switch-on temp. coll.1 S1 A1, A2
min2 … switch-on temp. coll.2 S2 A1, A3
diff1 … coll.1 S1 – CYL S3 A1, A2
diff2 … coll.2 S2 – CYL S3 A1, A3
diff3 … see all programs +1
CET 2 ... ON
S4 for program +2
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